In the Wordfence>Live Traffic>Logins and Logouts section, there are lots of addresses that have tried accessing the site via admin etc... user ids, the word block is at the side of them.
When I first installed, I was able click on block and it would refresh and show unblock. Now I click on block, it refreshes the screen but then nothing else happens.
So now when I choose to try and block I get the red wordfence working message but it is not blocked.